92 lines
3.1 KiB
Arduino
92 lines
3.1 KiB
Arduino
/*
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Demonstrating how to use "end"
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By: Paul Clark
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SparkFun Electronics
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Date: April 1st, 2021
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License: MIT. See license file for more information but you can
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basically do whatever you want with this code.
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This example shows how to use the end function.
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End will stop all automatic message processing and free (nearly) all used RAM.
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The file buffer is deleted (if it exists).
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Feel like supporting open source hardware?
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Buy a board from SparkFun!
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ZED-F9P RTK2: https://www.sparkfun.com/products/15136
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NEO-M8P RTK: https://www.sparkfun.com/products/15005
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SAM-M8Q: https://www.sparkfun.com/products/15106
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Hardware Connections:
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Plug a Qwiic cable into the GNSS and a BlackBoard
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If you don't have a platform with a Qwiic connection use the SparkFun Qwiic Breadboard Jumper (https://www.sparkfun.com/products/14425)
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Open the serial monitor at 115200 baud to see the output
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*/
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#include <Wire.h> //Needed for I2C to GNSS
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#include <SparkFun_u-blox_GNSS_Arduino_Library.h> //http://librarymanager/All#SparkFun_u-blox_GNSS
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SFE_UBLOX_GNSS myGNSS;
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void setup()
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{
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Serial.begin(115200);
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while (!Serial); //Wait for user to open terminal
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Serial.println("SparkFun u-blox Example");
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Wire.begin();
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//myGNSS.enableDebugging(); // Uncomment this line to enable helpful debug messages on Serial
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if (myGNSS.begin() == false) //Connect to the u-blox module using Wire port
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{
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Serial.println(F("u-blox GNSS not detected at default I2C address. Please check wiring. Freezing."));
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while (1);
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}
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myGNSS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise)
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//myGNSS.saveConfiguration(); //Optional: Save the current settings to flash and BBR
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myGNSS.end(); // Call end now just because we can - it won't do much as we haven't used any automatic messages
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}
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void loop()
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{
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// Allocate 128 bytes for file storage - this checks that issue #20 has been resolved
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// Allocating only 128 bytes will let this code run on the ATmega328P
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// If your processor has plenty of RAM, you can increase this to something useful like 16KB
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myGNSS.setFileBufferSize(128);
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if (myGNSS.begin() == false) //Connect to the u-blox module using Wire port
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{
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Serial.println(F("u-blox GNSS not detected. Freezing."));
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while (1);
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}
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Serial.print(F("The file buffer size is: "));
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Serial.println(myGNSS.getFileBufferSize());
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// Request Position, Velocity, Time
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// RAM will be allocated for PVT message processing
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// getPVT will return true is fresh PVT data was received and processed
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if (myGNSS.getPVT())
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{
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long latitude = myGNSS.getLatitude();
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Serial.print(F("Lat: "));
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Serial.print(latitude);
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long longitude = myGNSS.getLongitude();
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Serial.print(F(" Long: "));
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Serial.print(longitude);
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Serial.print(F(" (degrees * 10^-7)"));
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long altitude = myGNSS.getAltitude();
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Serial.print(F(" Alt: "));
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Serial.print(altitude);
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Serial.println(F(" (mm)"));
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}
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// Calling end will free the RAM allocated for file storage and PVT processing
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// Calling end is optional. You can comment the next line if you want to.
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myGNSS.end();
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}
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